The Palm Springs Aerial Tramway
The rotating tram cars take you 8000 feet up Mount San Jacinto, past amazing rock formations as the trees go from palms to pines. The views are spectacular, and at the top you can have a meal, get a drink at the bar, hike along the numerous trails, or just take in the views of the entire Coachella Valley all the way to the Salton Sea.
Recommendation: Go up early in the day or later in the afternoon during high season to avoid crowds. If you want an amazing view of Palm Springs, take a short hike to Notch 3. The food at the Tram restaurants can be expensive and unremarkable, so consider bringing along a picnic lunch. In the coldest times of the year, there may be a lot of snow up there which will limit hiking. The tram website has a couple webcams so you can check the conditions.